[linux-block.git] / arch / x86 / include / asm / ftrace.h

#ifndef _ASM_X86_FTRACE_H
#define _ASM_X86_FTRACE_H

#ifdef CONFIG_FTRACE
#define MCOUNT_ADDR		((long)(mcount))
#define MCOUNT_INSN_SIZE	5 /* sizeof mcount call */

#ifndef __ASSEMBLY__
extern void mcount(void);

static inline unsigned long ftrace_call_adjust(unsigned long addr)
{
	/*
	 * call mcount is "e8 <4 byte offset>"
	 * The addr points to the 4 byte offset and the caller of this
	 * function wants the pointer to e8. Simply subtract one.
	 */
	return addr - 1;
}
#endif

#endif /* CONFIG_FTRACE */

#endif /* _ASM_X86_FTRACE_H */
Commit	Line	Data
1965aae3 PA	1	#ifndef _ASM_X86_FTRACE_H
1965aae3 PA	2	#define _ASM_X86_FTRACE_H
395a59d0 AS	3
	4	#ifdef CONFIG_FTRACE
	5	#define MCOUNT_ADDR ((long)(mcount))
	6	#define MCOUNT_INSN_SIZE 5 /* sizeof mcount call */
	7
	8	#ifndef __ASSEMBLY__
	9	extern void mcount(void);
68bf21aa SR	10
	11	static inline unsigned long ftrace_call_adjust(unsigned long addr)
	12	{
	13	/*
	14	* call mcount is "e8 <4 byte offset>"
	15	* The addr points to the 4 byte offset and the caller of this
	16	* function wants the pointer to e8. Simply subtract one.
	17	*/
	18	return addr - 1;
	19	}
395a59d0 AS	20	#endif
	21
	22	#endif /* CONFIG_FTRACE */
	23
1965aae3	24	#endif /* _ASM_X86_FTRACE_H */